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7178057 |
Method for allowing a clustered computer systems manager to use disparate hardware on each of the separate servers utilized for redundancy
An apparatus for and method of providing failure recovery from redundancy, notwithstanding that the failed subsystem and its replacement have differing capacities. This is especially useful when...
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7178056 |
Rolling software upgrades for fault tolerant systems
Application software on a fault tolerant system having an active engine and a standby engine is upgraded. As part of the upgrade, the system determines if the active engine and the standby engine...
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7174478 |
Method for re-assigning data, apparatus for recording data and program
Data difficult to be written to a target sector (write) of a hard disk is recorded to a MRAM. The target sector (write) to which the write has been difficult is checked in a background of...
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7174422 |
Data storage device with two-tier raid control circuitry
In general, in one aspect, the disclosure describes a data storage device that includes a device interface for receiving data access requests, more than two disk drives having platter sizes less...
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7168026 |
Method and apparatus for preservation of failure state in a read destructive memory
One aspect of the invention provides a novel scheme to preserve the failure state of a memory location. According to one embodiment, the data is read from a memory location in a read-destructive...
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7165141 |
Daisy-chained device-mirroring architecture
A method of operating a daisy-chained device-mirroring architecture (where such an architecture may include a storage node N configured to mirror data on an entity representing node N−1, a...
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7162624 |
System and method for initializing hardware coupled to a computer system based on a board support package (BSP)
A system for initializing hardware of a computer system includes a board support package (BSP) ( 20 ) and a ROM monitor ( 30 ). The BSP includes: a basic initialization module ( 21 ) for...
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7162669 |
Apparatus and method for compressing redundancy information for embedded memories, including cache memories, of integrated circuits
An embedded memory on an integrated circuit has a memory cell array equipped with replacement cells and mapping logic for electronically substituting the replacement cells for defective cells at at...
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7152146 |
Control of multiple groups of network-connected storage devices
In a storage system comprising multiple storage devices with different interfaces, the characteristics, including the type of interface, of the storage devices on which the source volume is...
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7149859 |
Method and apparatus for data migration with the efficient use of old assets
A method and apparatus for performing data migration in storage systems implementing the remote copy function and virtualizing existing storage devices in a new storage system after migrating the...
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7149922 |
Storage system
A file server has plural NAS nodes having three processors dispersed in function, a shared cache memory shared between the plural NAS nodes and backed up by a battery, and plural storage devices. A...
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7146522 |
System and method for allocating spare disks in networked storage
A system and method for a file server to allocate spare disks in a network storage system. The method determines the available spare disks and first selects those disks that satisfy one or more...
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7143307 |
Remote disaster recovery and data migration using virtual appliance migration
A technique efficiently creates and serves a backup data set on a backup filer located at a remote site from a primary filer by essentially moving an entire operating environment of a primary data...
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7143308 |
Apparatus, system, and method for differential rebuilding of a reactivated offline RAID member disk
An apparatus, system, and method are disclosed for rebuilding only changed stripes of an offline member disk in a RAID array that is configured with redundancy and no hot standby disk. A...
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7139851 |
Method and apparatus for re-synchronizing mirroring pair with data consistency
A method and apparatus for re-synchronizing a remote mirroring pair including first and second storage systems which are connected to each other via a path, the first storage system being connected...
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7139935 |
Method and apparatus of recording data in the optical recording medium
The present invention relates to an optical recording medium and optical recording medium record/playback apparatus and method, for managing defective areas in a rewritable optical recording...
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7139933 |
Preserving cache data against cluster reboot
A dual cluster storage server maintains track control blocks (TCBs) in a data structure to describe the data stored in cache in corresponding track images or segments. Following a cluster failure...
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7137020 |
Method and apparatus for disabling defective components in a computer system
A method for configuring a computer system includes identifying a defective component in the computer system; disabling at least the defective component; and dynamically reconfiguring the computer...
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7130973 |
Method and apparatus to restore data redundancy and utilize spare storage spaces
Methods and apparatuses to restore data redundancy in a storage system with a storage virtualization engine. In one aspect of the invention, a method to restore data redundancy includes: receiving...
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7130954 |
Data migration method, protocol converter and switching apparatus using it
An online data migration method is provided for transferring data from a computer and an existing storage system using the conventional interface such as SCSI to a new storage system using SAN. The...
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7131027 |
Method and apparatus for disk array based I/O routing and multi-layered external storage linkage
A system and method for linking external storage systems that includes creating a virtual volume mapping at one or more storage systems. Each virtual volume mapping at each storage system...
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7127557 |
RAID apparatus and logical device expansion method thereof
A RAID device changes the redundancy of the RAID configuration, while allows various RAID level conversions and capacity increase. Using new and old RAID configuration definition information which...
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7127581 |
Data-migration method
A method of migrating data from an old storage subsystem to a new storage subsystem in a data processing system which comprises host computers and storage subsystems. There is provided a...
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7127638 |
Method and apparatus for preserving data in a high-availability system preserving device characteristic data
In a system comprising a plurality of components, characteristic data is stored on programmable read-only-memories (PROMS) on each component. The PROMs are coupled together via a simple bus, and...
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7120827 |
System and method of volume health checking and recovery
A system of volume health checking and recovery. The system comprises a health engine capable to check the health of a first volume that is a snapshot mirrored volume of a second volume; and a...
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7120826 |
Partial mirroring during expansion thereby eliminating the need to track the progress of stripes updated during expansion
A method, system and computer program product for performing an expansion of a disk array. Upon the failure of a disk in the disk array, the failed disk may be rebuilt stripe by stripe in the spare...
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7114015 |
Memory card having first modular component with host interface wherein the first modular is replaceable with a second modular component having second host interface
A memory card comprising a first modular component that comprises a first host interface and a first host interface module and a device interface module configured to operate a device interface...
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7111087 |
Storage control system and operating method for storage control system
Each disk enclosure 117 contains an ENC bypass 113 A for a disk connector 111 A, and PBC 101 A and 103 A, which perform selective switching to transfer data via either the disk connector 111...
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7111192 |
Method for operating storage system including a main site and a backup
The present invention allows a back-up site used for disaster recovery to be constructed in a shorter period of time. In a disk array device 1 at a main site, a copy 4 of a RAID group 3 is...
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7111193 |
Semiconductor memory having re-configurable fuse set for redundancy repair
This invention provides a circuit and a method for re-configuring fuse sets for memory cell array redundancy repair. In addition this invention relates to the use of fuse sets and spare row and...
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7111084 |
Data storage network with host transparent failover controlled by host bus adapter
A method and host bus adapter for controlling failover and failback processes within a redundant data storage system. The method is carried out by a failover mechanism in a host bus adapter linked...
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7111194 |
Mirror split brain avoidance
A technique includes a set of procedures utilized during the transfer of service of a failed storage system to a surviving storage system of a cluster failover (CFO) configuration during a system...
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7111115 |
Computer system and process for transferring multiple high bandwidth streams of data between multiple storage units and multiple applications in a scalable and reliable manner
Multiple applications request data from multiple storage units over a computer network. The data is divided into segments and each segment is distributed randomly on one of several storage units,...
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7107398 |
Changing a mode of a storage subsystem in a system
A system includes a storage subsystem capable of being set in at least a first mode and a second mode. When operating the storage subsystem in the first mode, redundant information is stored in a...
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7107493 |
System and method for testing for memory errors in a computer system
The specification may disclose a computer system that may operate a portion of available memory as backup to a primary memory, and the computer system may be adapted to test the backup memory for...
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7107421 |
Data migration method and a data migration apparatus
The management computer 600 copies data in the volume 111 within the storage device 100 A to the volume 115 within the storage device 100 B. Upon completion of copy processing, the volume ...
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7103689 |
Method for automatic replacement in automation technology field devices where swapping is not necessary
A method for operating an automation technology field device connected via a bus system with a superordinated unit and having an identifier identifying the type of the field device, at least one...
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7100090 |
Semiconductor memory device having a test circuit
A semiconductor memory device includes memory cells, redundant cells, a redundancy repair control circuit and a test mode control circuit. Each of the memory cells is assigned a unique address to...
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7089448 |
Disk mirror architecture for database appliance
A disk is segmented into a first data segment and a secondary data segment. The secondary data segment stores a logical mirror of the first data segment of another disk. Fast access to data stored...
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7085907 |
Dynamic reconfiguration of memory in a multi-cluster storage control unit
A data storage control unit is coupled to one or more host devices and to one or more physical storage units, the storage control unit configured as a plurality of clusters. Each cluster includes...
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7085826 |
Method and system for dynamic addition and removal of multiple network names on a single server
A method and apparatus for configuring a server in a distributed data processing system is provided. The server receives a request for a function that specifies a first server name and a second...
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7085956 |
System and method for concurrent logical device swapping
A system and method for concurrently performing logical device swaps for at least one logical subsystem, comprising: concurrently performing the following for each logical subsystem of each...
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7082549 |
Method for fault tolerant updating of an electronic device
Methods for updating an electronic device having a non-volatile memory are disclosed. An embodiment of the present invention may permit the update of an electronic device from a first code version...
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7076686 |
Hot swapping memory method and system
A method of hot swapping memory is described. A memory system includes a plurality of memory banks such that a memory word is divided into the memory banks. The memory system is provided a spare...
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7076643 |
Method and apparatus for providing revision identification numbers
Systems and methods are disclosed for detecting and reporting revision identification numbers (“rev IDs”). When the revision identifier of hardware that the computer is built out of changes,...
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7073090 |
Remote data mirroring system having a remote link adapter
A primary data storage system is linked to a geographically remote secondary data storage system for automatically maintaining a remote copy of the data in the primary storage. The primary data...
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7069090 |
Systems and methods for providing variable output feedback to a user of a household appliance
An embodiment of the present invention uses an on-board microcontroller of a household appliance to receive signals from a directionless encoder attached to a knob for receiving user input and...
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7069382 |
Method of RAID 5 write hole prevention
A method of efficiently preventing data loss, specifically a RAID 5 write hole, in data storage system by storing valid parity information at the storage controller level during data write...
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7069317 |
System and method for providing out-of-band notification of service changes
A system and method for detecting a failure of a first process is disclosed. According to one aspect, a first connection is established between a first process and a second process. A monitoring...
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7069468 |
System and method for re-allocating storage area network resources
A fiber channel storage area network (SAN) provides virtualized storage space for a number of servers to a number of virtual disks implemented on various virtual redundant array of inexpensive...
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